Tag Archives: resolve

How to Resolve “Error 503 Valid RCPT Command Must Precede DATA”

Related to: Email sending/SMTP problem on the client side “Sending’ reported error (0x800CCC65) : ‘Your outgoing (SMTP) e-mail server has reported an internal error. If you continue to receive this …

Tags: , , , , , , , , , , | Posted under cPanel/Linux Hosting, DotNet/Windows Hosting, Internet | 1 Comment